Blower.



No. 673,507 Patentd May 7, HM.

J. M. SEYMOUR, 1n. BLOWER. '0 idF b.

(Applicatl 11 15 e e 25, 1899.)

(No Model.)

UNITED STATES PATENT firemen.

JAMES M. SEYMOUR, JR., OF NEWARK, NEW JERSEY.

BLO WER SPECIFICATION forming part of Letters Patent No. 673,507, dated May '7, 1901. Application filed February 25, 1899- Serial No. 706,812. (No model.)

To all whom it may ooncerfi Be it known that I, JAMES M. SEYMOUR,

Jr., a citizen of the United States, residing at Newark, in the county of Essex and State of New Jersey, have invented a certain new and useful Improvement in Blowers, of which the following is a specification.

The improved blower acts by a rotary mo tion in a circular case. I will describe it as having the shaft and case horizontal. The shaft carries radial arms provided with obliquely-mounted thin blades or wings, which These parts may they were radial, but they are inclined relatively to the motion and curved in a form long and favorably known in centrifugal blowers, so as to drive the air in lines more nearly radial. The airthus driven outward by the centrifugal fan may mingle with the air driven by the screw action ofthe inclined blades or the air forced by thetwo separate means may move along in strata, the screwdriven air moving in a layer concentric to the other. If the parts are properly proportioned, there will be little, if any, difference in the condition of the air-in regard to its rotatory motion. That driven by the fan will be forced axially in the desired direction and will also be thrown into a helical motion. The air driven by the interior centrifugal blower is given about the same amount of circularmotion. Therebeingnootherwayfor its escape, itmoves axially along the passage with'about thesame helical motion as the other air. I provide an additional disk a little distance from the disk of the centrifugal blower,'which performs a function of great importance in cold climates.

.The accompanying drawings form a part of this specification andrepresent what I consider the best means of carrying out the invention.

motor.

Figure 1 is a vertical longitudinal section. Fig. 2 is a face View seen from the right in Fig. 1, and Fig. 3 is .a corresponding view seen from the left in Fig. 1. Fig. 4 is a perspective View of a portion detached.

Similar letters of reference indicate like parts in all the figures where they appear.

A is a fixed cylindrical casing of sheet metal or other suitable material, (wood serves well,) and A A are fixed spider-frames, which furnish bearings for the shaft B, extending along the axial line of the casing A and revolved rapidly by a steam-engine or other suitable (Not shown.)

B is a hub carrying arms B upon which are riveted or otherwise firmly secured properly-inclined screw-blades B On the back face of the screw is riveted a ring D, of sufficiently-stoutsheet metal, on the rear face of which are set a series of wings D, smoothly curved, as shown. The front edges of these wings are riveted to a disk D which prevents any axial movement of the air past it near the center. A little in rear of this disk D is set a hub 'E, upon which is riveted a disk E This latter receives the eddying currents of air which obtain in the space in rear of the whole. The air between the disks D and E is carried around idly and serves as a non-conductor for heat. In winter the air enters at so low a temperature that moisture in the eddying air if allowed to strike the disk D would condense and freeze. This plate E serves as a shield to prevent such. If moisture condenses there, it will be thrown off into the annular stratum or. actively-moving air. If under any extreme conditions ice is formed, it forms on this disk E and may remain or be thrown off at intervals by the centrifugal force without in any wise injuring or obstructing the working parts.

. Modifications may be made withoutdeparting from the principle or sacrificing the advantages of the invention. The number'of the radial arms B and the size and obliquity of the screw-wings B may be varied. So,also, the centrifugal wings D may vary in size and number. The proportions of the diameters may vary somewhat, but I have shown what I esteem the best. The shaft may be sufficiently supported by one bearing, having all the parts technically overhung; but what I consider the most complete form of the invention requires two bearings, and consequently the two spiders A A Parts of the invention can be used Without the Whole. I can use the shield-disk E set at a little distance from the disk D so as to inclose and carry around air with it which shall serve as a non-conducting stratum to prevent the transmission of heat, and thus reduce or entirely avoid the difficulties otherwise accruing from the condensation of moisture on the disk D with a single blower of the screw form without any equivalent of the centrifugal Wings D.

I claim as my invention- 1. The compound blower described having a screw-wheel with a series of oblique blades 13 with a practically-open center, the disk -D centrally mounted out of the plane of such wheel,and a series of centrifugal blowerblades D, combined and arranged for joint operation substantially as herein specified.

2. A blower comprising the shaft B, hub B, arms B and screw-blades B in combination with the ring D, centrifugal blades D and disk D arranged for joint operation sub stantially as herein specified.

3. In a screw-blower, the disk D and the supplementary disk or shield E separated by a stratum of air adapted to defend against the condensation of moisture on either disk, substantially as herein specified.

4. A blower comprising the shaft B, hub B, arms 13 and screw-blades B in combination with the ring D, centrifugal blades D and disk D and with the supplementary disk or shield E all arranged to serve substantially as herein specified.

5. In a disk fan having an open center, vanes formed and arranged to act centrifugally on air received near thecenter, in combination with pitched vanes on the periphery of the same disk acting asa propeller on different air received near the periphery, as herein specified. v

In testimony that I claim the invention above set forth I affix my signature in presence of two witnesses. I

J. M. SEYMOUR, JR.

Witnesses:

J. B.- CLAUTICE, M. F. BOYLE. 

